This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1400, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.

The AirTAC Airtac SI100 Standard Cylinder SI100X1400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1400, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1400 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 1400 mm stroke. It delivers a push force of 3927 N at 0.5 MPa and uses a G1/2 air port. Because this legacy SI unit is end-of-life, you should order the direct replacement: the SAI100X1400. It shares the same ISO 15552 mounting interface, output force, port size, and stroke, fitting directly into existing fixtures.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so consider the SAIL or BSAI lock variants. This specific SKU lacks a magnet, so it cannot accept CS1-B or DS1-B sensors.
| Model | Airtac SI100 Standard Cylinder SI100X1400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1400 |
| Bore size | Ø100 mm |
| Stroke | 1400 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X1400 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X1400 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1400 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Pushes heavy pallets along a 1.4 m conveyor line using 3927 N of thrust at 0.5 MPa.
Kicks heavy stamped parts out of a hydraulic press using a 100 mm bore and external guides.
To replace the discontinued SI100X1400, order the SAI100X1400, matching the 100 mm bore, 1400 mm stroke, G1/2 port, and ISO 15552 mounting. Confirm your thread option (PT, G, or NPT) and mounting accessory (like TC trunnion or FA flange). Because this SKU has no -S magnet, it cannot support position sensing; if you need switches, select a magnet-equipped SAI model and use current AirTAC sensors. For load holding on air loss, a standard cylinder drifts, so specify the SAIL lock, BSAI clamp-lock, or an external pilot check valve. Finally, at 1400 mm stroke, prevent rod bending by guiding the load externally to avoid side-load damage.
Replacement checklist
Yes, the SI100X1400 is discontinued. The direct replacement is the SAI100X1400. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 1400 mm stroke, G1/2 port, and mounting interface.
At 0.5 MPa it provides 3927 N push and 3681 N pull force. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical max force is 801 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and it uses a G1/2 port.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1400 replacement — usually within 7-8 hours.